Base | Representation |
---|---|
bin | 11010101000110101000101 |
3 | 111010202211221 |
4 | 122220311011 |
5 | 3241423411 |
6 | 405400341 |
7 | 113232355 |
oct | 32506505 |
9 | 14122757 |
10 | 6982981 |
11 | 3a3a465 |
12 | 24090b1 |
13 | 15a6555 |
14 | cdab65 |
15 | 92e071 |
hex | 6a8d45 |
6982981 has 2 divisors, whose sum is σ = 6982982. Its totient is φ = 6982980.
The previous prime is 6982979. The next prime is 6982999. The reversal of 6982981 is 1892896.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 6974881 + 8100 = 2641^2 + 90^2 .
It is a cyclic number.
It is not a de Polignac number, because 6982981 - 21 = 6982979 is a prime.
It is a super-2 number, since 2×69829812 = 97524047292722, which contains 22 as substring.
Together with 6982979, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (6982901) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3491490 + 3491491.
It is an arithmetic number, because the mean of its divisors is an integer number (3491491).
Almost surely, 26982981 is an apocalyptic number.
It is an amenable number.
6982981 is a deficient number, since it is larger than the sum of its proper divisors (1).
6982981 is an equidigital number, since it uses as much as digits as its factorization.
6982981 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 62208, while the sum is 43.
The square root of 6982981 is about 2642.5330650722. The cubic root of 6982981 is about 191.1379630584.
The spelling of 6982981 in words is "six million, nine hundred eighty-two thousand, nine hundred eighty-one".
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